Conveying mechanism.



PATENTED JAN. 14, 1908,

' H. G. TRIPP.

CONVEYING MBGHANISM.

APPLICATION FILED APR.26. 1901.

UNITED sTATEs PATENT oEEroE.

HARRY C. TRIPP, OF'CHICAGO, ILLINOIS, ASSIGNOR, BY MESNE ASSIGNMENTS, TO THE UNDER-FEED STOKER, COMPANY OF AMERICA, OF CHICAGO, ILLINOIS, A CORPORA- TION OF NEW JERSEY.

CONVEYING MECHANISM.

Patented Jan. 14, 1908.

Application filed April 26. 1901. Serial No. 57.602.

To all whom it may concern;

Be it known that I, I-IARRY C. TEIrr, citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Conveying Mechanism, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

My invention relates to mechanically fed stokers and other apparatus in whichcon-v veying screws are employed for eecting the distribution of fuel, grain, etc.

My invention has avery useful application to mechanically fed furnaces, and I will therefore describe my invention particularly in connection with this application thereof without limiting myself to this use.

Furnaces to which my invention is adaptable lare provided with screw conveyers for forcing fuel from hoppers to fuel retorts, and

it is the object of my invention to provide means whereby the fuel may be distributed Within the retort in the places desired, and.

whereby an unbalanced@ lateral distribution of thefuel is prevented. To this end I have provided sloping plates or blocks of suitable material, preferably iron, constituting deiiectors through which, the conveyers are passed and which serve to remove the fuel from the conveyers to direct the same upwardly. To prevent an unequal .lateral distribution, I provide projected portions of the deflectors beneath the conveyers which by being placed upon the sides of the conveyers towar which the conveyers rotate, serve to equalize the distribution of the fuel and to prevent'exces'sive quantities offuel from being placed on those sides of the conveyers, which would otherwise happen. The deflectorportions above and below the screw are preferably integrally formed, so that thereby the required distribution of the fuel is effected in 45 vertical and lateral directions.

Heretofore where screws, each formed in sections of diierent diameters, have been em loyed for feeding coal into furnaces, the fue has frequently been packed so tightly into the retort as to require it to be chiseled 'away. The reason for this faulty operation of such screw conveyers of the prior art is that the fuel is fed in a longitudinal'direction only. I provide in connection with each retort a deflector or deflectors adapted to the fuel and a proper vertical distribution thereof, I do not wish to be limited to a structure that necessarily is capable of performing both functions.

I will explain my invention more fully by reference to the accompanying drawing illustrating the preferred embodiment thereof, in which,

Figure l is a vertical sectional view of my improved stoking apparatus; Fig. 2 is a sectional view on line 2 2 of Fig. l Fig. 3 is a top view of a guiding block.

Like characters of reference indicate like parts throughout the different figures.

Y I have illustrated a furnace designed to onsume coal employing a fuel retort or receptacle a, within which the fuel is consumed, a hopper l) for supplying the fuel to the furnace, a fuel. channel c intervening between the hopper and the retort, and conveying means comprising conveyer Screws or sections of agscrew d, e and f that referably vary abru tly in diameter. The argest screw d forces uel from the hopper into the retort, The intermediate screw e continues the propulsion of the fuel; and the final distribution thereof is effected by the screw f. The screws are mounted upon a common shaft and are driven by any suitable agenc Assuming that the screws rotate in a cloc wise direction, vit is apparent that without counteracting means', the screws will force more fuel upon the right side of the retort than upon the left. To counteract this tendency there isA provided for -each of the screws e and f a deflector g that is preferabl tapered to constitute a wedge, and whic has its point o r wedge end located a suiiieient distance upon that side ofthe vertical diameter of the screw toward whichA it rotates, whereby the quantity of fuel thrown upon that side is decreased to secure the desired .equalized distribution. The faces. of the deflectors g, g, facing the main feeding screw d, are inclined to properly guide the fuel vertically. The deflectors g, g preferably entirely surround the feeding screws,

fuel.

It has heretofore been proposed to provide a tapering feeding screw without any auxiliary means for effecting the upward distribution of the fuel, which method has not been found to give thorough satisfaction. It will be observed that I have provided the retort orpassage way with successively higher portions to correspond to the sections of the screw of decreasing diameter, that is, the bottom of the furnace is stepped to form lodging places for the defiectors. The furnace of my invention is one wherein the fuel may not be packed at `the rear end of the retort as the deilectors serve to effect a sufficient vertical distribution of the fuel and remove a portion of the fuel from horizontal travel, these deflectors not serving, however, to permit longitudinal distribution -of a proper amount of fuel, as the holes pro vided therein through which the conveyer passes are of a size to also permit the passage of the fuel.

While I have herein shown and particularly described the preferred embodiment of my invention, I do not wish to .be limited to the construction shown, nor to its application to mechanically fed furnaces, as modifications may readily be made and the invention may be put to other uses Without departing from the spirit thereof, but

distributing which inclined surface serves to direct the.

material upwardly, the said deflector termi-l nating in a wedge beneath the screw, substantially as described.

2. The combination with a receptacle, of

a conveyingcrew, and a' deflector g provided with a hole through which the conveying screw passes, the said deflector being provided with an inclined surface -toward which the material fed by the screw is directed, which inclined surface serves to `direct the material upwardly, the' said deflector terminating in a wedge beneath the screw, the said wedge being located upon one side of' the vertical plane cutting the longitudinal axis of the screw, substantially as described.

3. The combination with a screw conveyer, a passageway within wh'iclthe conveyer is disposed, of a deflector, having a de liecting surface located beneath the conveyer to determine the lateral distribution of the material carried by the conveyer, said deflecting surface being located upon one side of the vertical plane cutting the longitudinal aXis of'4 the conveyer, substantially as described.

In witness whereof, I hereunto subscribe s0 my name this 8th day of April A. D., 1901. i HARRY C. TRIPP.

Witnesess: i,

GEORGE L. CRAGG, HERBERT F. OBERFELL. 

